Rotary hoisting equipment for wind power blade

Abstract

The utility model provides rotary hoisting equipment for wind power blades, which comprises a right-angle speed reducer, a driving motor, a transmission component and a hoisting component, an output shaft of the driving motor is fixedly connected with an input end of the right-angle speed reducer, and the right-angle speed reducer is in transmission connection with the hoisting component through the transmission component. The hoisting assembly is rotationally mounted at the bottom end of the right-angle speed reducer; at least three hoisting rings are mounted at the top end of the right-angle speed reducer; the hoisting assembly comprises an anti-skid wheel and a flexible hoisting belt in transmission connection with the anti-skid wheel in a matched mode. The anti-skid wheel is rotationally installed at the bottom end of the right-angle speed reducer. According to the technical scheme, the input power of the driving motor is transmitted to the hoisting assembly through the right-angle speed reducer, flexible hoisting of the wind power blade is achieved through the flexible hoisting belt in the hoisting assembly, and the phenomenon that the flexible hoisting belt slips during hoisting is avoided in combination with the arrangement of the anti-skid wheels; meanwhile, at least three lifting rings are arranged at the top end of the right-angle speed reducer to improve the lifting stability.

Description

Technical Field

[0001] The utility model relates to the technical field of wind turbine blade hoisting, in particular to a rotating hoisting device for wind turbine blades. Background Art

[0002] The development of wind power generation depends on the production of a large number of wind turbines. Wind turbines cannot do without blades. Wind turbine blades are a thin shell structure made of composite materials, generally composed of three parts: root, outer shell and reinforcement ribs or beams. To meet market demand, blades are now made larger and larger, the manufacturing process is complicated, and due to the material, the blades are heavy. At present, in the process of blade production, wind turbine blades usually need to constantly change their storage posture (blades are placed flat or stored at 90 degrees), so a device is needed to realize blade rotation; and there are two solutions for rotating blades in the prior art: the first is to realize blade rotation through a blade root circle car and a blade tip circle car. The disadvantage of this solution is that the structure of the blade tip suspension point is weak, and the contact between the blade tip circle car and the blade is hard contact, so the circle car is prone to damage the blade during rotation; the second is to use an unpowered rotating hanger to replace the blade tip circle car and use it in conjunction with the blade root circle car. The disadvantage of this solution is that the blade rotation process is completely driven by the blade root circle car, which will cause torque damage due to uneven force during the blade rotation process. Therefore, it is necessary to develop a device to cooperate with the blade root circle car to realize the synchronous rotation of the blade root and blade tip, uniform force during the rotation process, and reduce the risk of blade damage. Utility Model Content

[0003] The utility model aims to provide a rotating hoisting device for wind turbine blades to achieve stable adjustment of the storage posture of the wind turbine blades.

[0004] The utility model provides a rotating hoisting device for wind turbine blades, comprising a right-angle reducer, a drive motor, a transmission assembly and a hoisting assembly, wherein the output shaft of the drive motor is fixedly connected to the input end of the right-angle reducer, the right-angle reducer and the hoisting assembly are connected by transmission via the transmission assembly, the hoisting assembly is rotatably mounted on the bottom end of the right-angle reducer, and at least three lifting rings are installed on the top end of the right-angle reducer; the hoisting assembly comprises an anti-skid wheel and a flexible lifting belt that is matched and connected to the anti-skid wheel, and the anti-skid wheel is rotatably mounted on the bottom end of the right-angle reducer.

[0005] Furthermore, a U-shaped support frame is fixedly mounted on the bottom end of the right-angle reducer, and the transmission assembly is mounted on the side of the support frame.

[0006] Furthermore, the transmission assembly includes a rotating seat and a shaft rod, the rotating seat is fixedly mounted on the side of the support frame, the shaft rod is rotatably mounted on the rotating seat, and the output end of the right-angle reducer and the shaft rod, as well as the lifting assembly and the shaft rod are meshingly connected through bevel gears.

[0007] Furthermore, the hoisting assembly includes a hoisting shaft, the anti-skid wheel is fixedly mounted on the hoisting shaft, and both ends of the hoisting shaft are rotatably connected to the support frame respectively.

[0008] Furthermore, the anti-skid wheel is provided with convex teeth at equal intervals along its circumference, and the inner side of the flexible lifting belt is provided with engaging teeth that cooperate with the convex teeth.

[0009] Furthermore, the interior of the flexible lifting belt is coated with a plurality of steel strands arranged in parallel.

[0010] Furthermore, limit baffles are respectively provided on both sides of the anti-skid wheel, and the diameter of the limit baffles is larger than the diameter of the anti-skid wheel.

[0011] Furthermore, a flexible cushion layer is provided on the inner side of the flexible lifting belt.

[0012] Furthermore, the output shaft of the driving motor is fixedly connected to the input end of the right-angle reducer via a coupling.

[0013] Furthermore, the number of the hanging rings is four, and the four hanging rings are installed at the top of the right-angle reducer in a rectangular array with equal spacing.

[0014] The beneficial effects of the technical solution of the utility model are as follows: the technical solution transmits the input power of the driving motor to the lifting assembly through the right-angle reducer, and realizes flexible lifting of the wind turbine blades through the flexible lifting belt in the lifting assembly. Combined with the setting of anti-skid wheels, the phenomenon of slipping of the flexible lifting belt during lifting is avoided. At the same time, at least three lifting rings are installed at the top of the right-angle reducer to improve the stability of the lifting. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] In order to more clearly illustrate the specific implementation methods of the utility model or the technical solutions in the prior art, the drawings required for use in the specific implementation methods or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some implementation methods of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0016] Figure 1 It is a schematic diagram of the overall structure of the utility model.

[0017] Figure 2It is another overall structural schematic diagram of the utility model.

[0018] Figure 3 It is a schematic diagram of the installation structure of the support frame and the lifting assembly in the utility model.

[0019] Figure 4 This is a schematic diagram of the side structure in Example 3 of the utility model.

[0020] Explanation of the reference numerals: 1-right angle reducer; 2-driving motor; 3-lifting ring; 4-support frame; 401-slot; 5-lifting shaft; 6-anti-skid wheel; 7-flexible lifting belt; 8-rotating seat; 9-shaft rod; 10-bevel gear; 11-limit baffle. DETAILED DESCRIPTION

[0021] The technical solution of the utility model will be clearly and completely described below in conjunction with the embodiments. Obviously, the described embodiments are part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0022] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise" and the like indicating directions or positional relationships are based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore should not be understood as a limitation on the present invention.

[0023] In addition, the terms "first" and "second" are used for descriptive purposes only and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present utility model, "multiple" means two or more, unless otherwise clearly and specifically defined. In addition, the terms "installed", "connected", and "connected" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal connection of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances.

[0024] Example 1

[0025] like Figure 1-Figure 3 As shown, the utility model provides a rotating hoisting device for wind turbine blades, including a right-angle reducer 1, a driving motor 2, a transmission assembly and a hoisting assembly. The output shaft of the driving motor 2 is fixedly connected to the input end of the right-angle reducer 1 through a coupling, and the right-angle reducer 1 and the hoisting assembly are connected through the transmission assembly. In this embodiment, the transmission assembly includes a rotating seat 8 and an axle rod 9. A U-shaped support frame 4 is fixedly installed at the bottom end of the right-angle reducer 1, the rotating seat 8 is fixedly installed on the side of the support frame 4, and the axle rod 9 is rotatably installed on the rotating seat 8; the hoisting assembly includes a hoisting shaft 5, an anti-skid wheel 6 and a flexible hoisting belt 7 that is matched and connected to the anti-skid wheel 6. The anti-skid wheel 6 is fixedly installed on the hoisting shaft 5, and the two ends of the hoisting shaft 5 are respectively rotatably connected to the support frame 4. The output end of the right-angle reducer 1 and the shaft 9, as well as the lifting shaft 5 and the shaft 9 are meshed and connected via bevel gears 10. The output power of the drive motor 2 is transmitted from the right-angle reducer 1 to the lifting shaft 5 through the meshing of the bevel gears 10. Here, the transmission component plays the role of transition transmission, making the axis of the lifting shaft 5 parallel to the output axis of the right-angle reducer 1.

[0026] The hoisting shaft 5 and the support frame 4 are rotatably connected via a bearing, which reduces the resistance of the hoisting shaft 5 and the shaft rod 9 during rotation and ensures the rotation accuracy of the hoisting shaft 5 and the shaft rod 9.

[0027] Three lifting rings 3 are installed at the top of the right-angle reducer 1. During lifting, multiple chains are used to connect the corresponding lifting rings 3, and then the synchronous right-angle reducer 1 is lifted. This can effectively prevent the synchronous right-angle reducer 1 from swinging during the lifting process, improve its stability during the lifting process, and further ensure the stability of the wind turbine blades during the lifting and rotation process.

[0028] The anti-skid wheel 6 is provided with convex teeth at equal intervals along its circumference, and the inner side of the flexible lifting belt 7 is provided with engaging teeth that cooperate with the convex teeth. The engaging action of the convex teeth and the engaging teeth is used to increase the friction between the flexible lifting belt 7 and the flexible lifting belt 7 to prevent the flexible lifting belt 7 from slipping relative to the anti-skid wheel 6. The two sides of the anti-skid wheel 6 are respectively provided with limit baffles 11, and the diameter of the limit baffles 11 is larger than the diameter of the anti-skid wheel 6. The limit baffles 11 are used to block the edge of the flexible lifting belt 7 to prevent the flexible lifting belt 7 from slipping.

[0029] The flexible lifting belt 7 is coated with a plurality of steel strands arranged in parallel, which improves the tensile strength of the flexible lifting belt 7 and reduces the deformation of the flexible lifting belt 7 during the force-bearing process. In order to prevent the flexible lifting belt from damaging the lifting position of the blade tip during the lifting process, a flexible cushion layer can be provided on the inner side of the flexible lifting belt 7, and the flexible cushion layer can be heat-sealed on the inner side of the flexible lifting belt 7 by rubber.

[0030] Example 2

[0031] Compared with Example 1, the technical feature of this embodiment is that the number of the lifting rings 3 is four, and the four lifting rings 3 are installed at the top of the right-angle reducer 1 in a rectangular array with equal spacing.

[0032] Example 3

[0033] like Figure 4 As shown, the technical features that distinguish this embodiment from other embodiments are that: the lifting assembly can be detachably mounted on the support frame 4, a slot 401 is provided on the support frame 4, and the bearings on both sides of the lifting shaft 5 are respectively clamped in the corresponding slots 401 on both sides of the support frame 4. When the flexible lifting belt 7 needs to be replaced, the lifting shaft 5 can be easily replaced by removing it. When the lifting shaft 5 is set to a detachable structure, circular limit plates need to be respectively provided on the lifting shaft 5, and the outer sides of the two limit plates are respectively fitted with the two inner walls of the support frame 4 to limit the axial movement of the lifting shaft 5 and prevent it from falling off.

[0034] Before the wind turbine blade is rotated and hoisted, the right-angle reducer 1 is hoisted onto the crane, and then the flexible lifting belt 7 is put on the tip of the wind turbine blade, and the blade root is engaged with the blade root circle car. The blade root circle car and the drive motor 2 are started synchronously through linkage control. The output end of the right-angle reducer 1 drives the hoisting shaft 5 to rotate through the meshing action of the bevel gear 10, so that the flexible lifting belt 7 mounted on the anti-skid wheel 6 rotates. When the flexible lifting belt 7 rotates, the blade tip is driven to rotate through friction. During the rotation process, the flexible lifting belt 7 is in soft contact with the blade tip, which can meet the path change when the blade tip rotates, and the blade root circle car drives the blade root to rotate.

[0035] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the utility model, rather than to limit it. Although the utility model has been described in detail with reference to the aforementioned embodiments, ordinary technicians in this field should understand that they can still modify the technical solutions recorded in the aforementioned embodiments, or replace some or all of the technical features therein with equivalents. However, these modifications or replacements do not make the essence of the corresponding technical solution deviate from the scope of the technical solution of the embodiments of the utility model.

Claims

1. A rotating hoisting device for wind turbine blades, characterized in that: It includes a right-angle reducer, a drive motor, a transmission assembly and a lifting assembly, wherein the output shaft of the drive motor is fixedly connected to the input end of the right-angle reducer, the right-angle reducer and the lifting assembly are transmission-connected via the transmission assembly, the lifting assembly is rotatably mounted on the bottom end of the right-angle reducer, and at least three lifting rings are installed on the top end of the right-angle reducer; the lifting assembly includes an anti-skid wheel and a flexible lifting belt transmission-connected thereto, and the anti-skid wheel is rotatably mounted on the bottom end of the right-angle reducer.

2. The rotating hoisting device for wind turbine blades according to claim 1, characterized in that: A U-shaped support frame is fixedly mounted on the bottom end of the right-angle reducer, and the transmission assembly is mounted on the side of the support frame.

3. The rotating hoisting device for wind turbine blades according to claim 2, characterized in that: The transmission assembly includes a rotating seat and a shaft rod, wherein the rotating seat is fixedly mounted on the side of the support frame, and the shaft rod is rotatably mounted on the rotating seat. The output end of the right-angle reducer and the shaft rod, as well as the lifting assembly and the shaft rod, are meshedly connected via bevel gears.

4. The rotating hoisting device for wind turbine blades according to claim 2, characterized in that: The hoisting assembly comprises a hoisting rotating shaft, the anti-skid wheel is fixedly mounted on the hoisting rotating shaft, and both ends of the hoisting rotating shaft are respectively rotatably connected to the supporting frame.

5. The rotating hoisting device for wind turbine blades according to claim 1, characterized in that: The anti-skid wheel is provided with convex teeth at equal intervals along its circumference, and the inner side of the flexible lifting belt is provided with engaging teeth matched with the convex teeth.

6. The rotating hoisting device for wind turbine blades according to claim 1, characterized in that: The interior of the flexible lifting belt is coated with a plurality of steel strands arranged in parallel.

7. The rotating hoisting device for wind turbine blades according to claim 5, characterized in that: Limit baffles are respectively arranged on both sides of the anti-skid wheel, and the diameter of the limit baffles is greater than the diameter of the anti-skid wheel.

8. The rotating hoisting device for wind turbine blades according to claim 6, characterized in that: A flexible cushion layer is arranged on the inner side of the flexible lifting belt.

9. The rotating hoisting device for wind turbine blades according to claim 1, characterized in that: The output shaft of the driving motor is fixedly connected to the input end of the right-angle reducer via a coupling.

10. The rotating hoisting device for wind turbine blades according to claim 1, characterized in that: There are four lifting rings, which are installed at the top of the right-angle reducer in a rectangular array with equal spacing.

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